boissier



(No Model.) 2 Sheets-Sheet I.

H. R. BOISSIER. REGULATOR FOR ELEGTRIG ARC LAMPS.

WITNESSES: v INVENTOR BY \A f ATTORNEY (No Model.)- 2 Sheets-Sheet 2.

H. R. BOISSIER.

I REGULATOR FOR ELECTRIC ARC LAMPS.

No. 310,781. Patented Jan. 13, 1885.

a .H P 9 1 f I I WITNESSES INVENTOR E MW z Kw ATTORNEY UNITED STATESHERRMANN n. noiss inn, or New roan, N.

PATENT Genie-n.

REGULATOR FOR ELECTRlC-ARC LAMPS.

SPECIFICATION forming part of Letters Patent No. 310,781, dated January13, 1885.

Application filed May 13, 1882. (No model.) Patented in England January22, 1883, No. 361; in France January 2-2, 1883, No. 153,234; in BelgiumJanuary 22, 1883, No. 60,234; in Germany January 24, 1853, No. 26,217,and in Austria May 9, 1883, No. 2,547.

To all whom it may concern.-

Beit known that I, HERRMANNR. BOISSIER, of New York, in the county ofNew York and State of New York, have invented a new and usefulImprovement in Regulators for Electric Lights; and I do hereby declarethat the following is a full and exact description of the same,reference being had to the accompanying drawings, and to the letters ofreference marked thereon.

My invention relates to that class of electriclight regulators in whichthe upper-carbon holder is provided with a rack-bar engaging with atrain of gearing of which the weight of carbon-holder is the motivepower, such train of gearing being carried by a pivoted swinging frameconnected with the armature or movable cores of two electro-magi1ets,oneof low resistance, and placed directly in the circuit with thecarbon-points, the other of high resistance, and situated in a shuntaround the same. In such regulators some detent mechanism is necessaryfor stopping the downward movement of the rack-bar when the upper carbonhas fed sufficiently far forward. Heretofore such detents have usuallybeen fixed permanently or adjustably to the case con taining theregulating mechanism, or to other stationary portion of the apparatus.In such cases the detent being fixed and the gearing pivoted,therelative position of the two varied, leading to occasional failures.

The object of my invention is to arrange the gearing and detent so thatthere shall always be certainty of action between them, to which end itconsists in pivoting the detent upon the swinging frame carrying thegearing, thus insuring a definite relation between the two, no matterwhat the position of the swinging frame, as more particularlyhereinafter described and claimed.

In the accompanying drawings, Figure 1 is a front elevation and partialsection of the upper portion of an electric-are lamp constructedaccording to my invention, the casing which covers the mechanism beingremoved; Fig. 2, a top view of the same, and Figs. 3 and at detail viewsof portions of the gearing and detent mechanism.

the direct circuit with the carbons, and A that of high resistance in ashunt around the same, 13 being the movable core of said magnets.

0 is the upper-carbon carrier, provided with a raclcbar, a, on one side.A frame, D, pivoted at points Z) Z) and carrying a weight, is attachedto core 13 by means of link E. This frame carries a train of gearing, cF d d, terminating in the retarding-fan G, the rack-bar upon 0 meshingwith the first wheel thereof and communicating motion thereto, which,retarded by G, permits the gradual descent of C.

To an arm, II, arojecting below the frame D, is pivoted the metal pieceI, provided at one end with notches e, the other end,' f, beingweighted, so that the end 6 may be thrown up into contact with thevibrating fan G. \Vhen this occurs, the lower end of the fan is caughtin the notches c, and the movement of the train of gearing and of thecarbon-carrier O is stopped. An adj llStllJg-SOIOW, S, passes up throughthe frame, its upper end taking under the end f of the detent I, so thatits point of action may be regulated.

The operation of these devices is as follows: After the formation of theare, as the carbons burn away and recede from each other the currentthrough the magnet A decreases, and that through the magnet A increasingproportionately, the movable core B is drawn down and the outer end ofthe frame D is raised, disengaging the fan G from the arm I and allowingthe upper carbon to descend to the proper distance, but should itdescend too far the decrease of resistance causes the magnet A to raiseits core B, so that the outer end of frame D is lowered, and the fan Gcatches in the notches e and stops the motion of the rackbar. By thisarrangement the detent is made absolutely certain in its action, for theweight of the arm I holds the notched end thereof firmly against the fanG and entirely prevents its vibration.

That I claim is 1. In an electric-light regulator, the combination of avibrating fly gearing with the rack attached to the upper-carboncarrier, and a A is the electro-magnet of low resistance in levernotched at one end and normally in con- :00

ver I, notched at 0 and weighted atf, the said lever being also pivotedto the swinging frame, all substantially as shown and described.

This specification signed and witnessed this 9th day of May, 1882.

HERRMANN It. BOISSIER.

\Vitnesses:

H. \V. SEELY, I. WILBER.

